GB2337117B - Digital ultrasonic monitoring system and method - Google Patents
Digital ultrasonic monitoring system and methodInfo
- Publication number
- GB2337117B GB2337117B GB9910083A GB9910083A GB2337117B GB 2337117 B GB2337117 B GB 2337117B GB 9910083 A GB9910083 A GB 9910083A GB 9910083 A GB9910083 A GB 9910083A GB 2337117 B GB2337117 B GB 2337117B
- Authority
- GB
- United Kingdom
- Prior art keywords
- monitoring system
- ultrasonic monitoring
- digital ultrasonic
- digital
- ultrasonic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/36—Detecting the response signal, e.g. electronic circuits specially adapted therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H1/00—Measuring characteristics of vibrations in solids by using direct conduction to the detector
- G01H1/003—Measuring characteristics of vibrations in solids by using direct conduction to the detector of rotating machines
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H3/00—Measuring characteristics of vibrations by using a detector in a fluid
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/24—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using infrasonic, sonic, or ultrasonic vibrations
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/24—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using infrasonic, sonic, or ultrasonic vibrations
- G01M3/243—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using infrasonic, sonic, or ultrasonic vibrations for pipes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/14—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object using acoustic emission techniques
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/44—Processing the detected response signal, e.g. electronic circuits specially adapted therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/44—Processing the detected response signal, e.g. electronic circuits specially adapted therefor
- G01N29/4454—Signal recognition, e.g. specific values or portions, signal events, signatures
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Acoustics & Sound (AREA)
- Examining Or Testing Airtightness (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0102352A GB2355795B (en) | 1998-05-04 | 1999-04-30 | Route based ultrasonic monitoring system |
GB0102353A GB2355796B (en) | 1998-05-04 | 1999-04-30 | Ultrasonic monitoring device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US7556098A | 1998-05-04 | 1998-05-04 |
Publications (3)
Publication Number | Publication Date |
---|---|
GB9910083D0 GB9910083D0 (en) | 1999-06-30 |
GB2337117A GB2337117A (en) | 1999-11-10 |
GB2337117B true GB2337117B (en) | 2001-04-04 |
Family
ID=22126550
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9910083A Expired - Fee Related GB2337117B (en) | 1998-05-04 | 1999-04-30 | Digital ultrasonic monitoring system and method |
Country Status (2)
Country | Link |
---|---|
US (1) | US6247353B1 (en) |
GB (1) | GB2337117B (en) |
Families Citing this family (58)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2361062B (en) * | 1998-03-05 | 2002-01-16 | Palmer Environmental Ltd | Detecting leaks in pipes |
US6078874A (en) * | 1998-08-04 | 2000-06-20 | Csi Technology, Inc. | Apparatus and method for machine data collection |
GB2358470B (en) * | 1999-02-02 | 2002-02-27 | Csi Technology Inc | Enhanced detection of vibration |
US6234021B1 (en) * | 1999-02-02 | 2001-05-22 | Csi Technology, Inc. | Enhanced detection of vibration |
GB9920508D0 (en) * | 1999-09-01 | 1999-11-03 | Metrika Limited | Detecting leaks in water distribution systems |
TW522226B (en) * | 2001-02-20 | 2003-03-01 | Tlv Co Ltd | Portable leak detector |
JP2003099704A (en) * | 2001-09-21 | 2003-04-04 | Mitsubishi Electric Corp | Handy terminal device with programmable vibration pattern, and application software for handy terminal device |
US6839660B2 (en) | 2002-04-22 | 2005-01-04 | Csi Technology, Inc. | On-line rotating equipment monitoring device |
US6938488B2 (en) * | 2002-08-21 | 2005-09-06 | Battelle Memorial Institute | Acoustic inspection device |
DE10247257A1 (en) * | 2002-10-10 | 2004-04-22 | Agfa Ndt Gmbh | Ultrasonic testing device for non-destructive testing of workpiece e.g. point welded joint between automobile body components, with bar display for real-time signal value obtained from echo signal sequence |
US6772636B2 (en) * | 2002-11-06 | 2004-08-10 | Varco I/P, Inc. | Pipe flaw detector |
US20060209632A1 (en) * | 2002-11-12 | 2006-09-21 | U-E Systems, Inc. | General purpose signal converter |
WO2004045088A2 (en) * | 2002-11-12 | 2004-05-27 | U-E Systems, Inc. | System and method for heterodyning an ultrasonic signal |
US7817050B2 (en) * | 2002-11-12 | 2010-10-19 | U.E. Systems Inc. | Ultrasonic gas leak detector with an electrical power loss and carbon footprint output |
EP1681383A1 (en) * | 2005-01-14 | 2006-07-19 | Electrolux Home Products Corporation N.V. | Textile product treating apparatus having an ultrasonic cleaning device |
US7246522B1 (en) * | 2006-02-24 | 2007-07-24 | Battelle Memorial Institute | Methods and apparatus for multi-parameter acoustic signature inspection |
US7698946B2 (en) | 2006-02-24 | 2010-04-20 | Caterpillar Inc. | System and method for ultrasonic detection and imaging |
US7770999B2 (en) * | 2006-09-27 | 2010-08-10 | Electronics For Imaging, Inc. | Sonic leak testing on ink delivery systems and ink jet heads |
NO331105B1 (en) * | 2007-04-30 | 2011-10-10 | Nat Oilwell Norway As | A method for detecting a malfunction of a fluid impacted component of a piston machine |
WO2008150411A1 (en) * | 2007-05-29 | 2008-12-11 | Hadronex, Llc | Leak detection system and method |
JP5311771B2 (en) * | 2007-06-23 | 2013-10-09 | フジテコム株式会社 | Leak detection device |
JP4832538B2 (en) * | 2009-02-26 | 2011-12-07 | 株式会社テイエルブイ | Discharge flow rate measurement method |
US9341603B1 (en) | 2009-07-30 | 2016-05-17 | John Jenkins | Handheld ultrasound detection apparatus having a flexible tube |
US8495914B2 (en) * | 2009-07-30 | 2013-07-30 | Discovery Sound Technology LLC | Handheld ultrasound detection apparatus having a flexible tube |
CN103038599B (en) * | 2010-04-16 | 2016-03-30 | U·E·系统公司 | Onboard ultrasound ripple frequency spectrum and Computer image genration |
FR2961309B1 (en) * | 2010-06-11 | 2012-07-13 | Peugeot Citroen Automobiles Sa | ACOUSTIC DIAGNOSTIC METHOD FOR A MOTOR VEHICLE COMPRISING ULTRASONIC NOISE LISTENING |
FR2961308B1 (en) * | 2010-06-11 | 2012-07-13 | Peugeot Citroen Automobiles Sa | VIBROACOUSTIC DIAGNOSTIC ASSISTING TOOL FOR A MOTOR VEHICLE |
JP5740191B2 (en) * | 2011-04-05 | 2015-06-24 | 矢崎エナジーシステム株式会社 | Leak detection device |
US9200979B2 (en) * | 2011-04-15 | 2015-12-01 | U.E. Systems, Inc. | System for bearing fault detection |
DE102012217318A1 (en) * | 2012-09-25 | 2014-05-28 | Weber Ultrasonics Gmbh | Communication device for an ultrasound device and method for operating such |
US9223299B2 (en) | 2012-11-30 | 2015-12-29 | Discovery Sound Technology, Llc | Equipment sound monitoring system and method |
US9971667B1 (en) | 2012-11-30 | 2018-05-15 | Discovery Sound Technology, Llc | Equipment sound monitoring system and method |
US10156844B1 (en) | 2012-11-30 | 2018-12-18 | Discovery Sound Technology, Llc | System and method for new equipment configuration and sound monitoring |
US10145761B1 (en) | 2012-11-30 | 2018-12-04 | Discovery Sound Technology, Llc | Internal arrangement and mount of sound collecting sensors in equipment sound monitoring system |
US9557365B2 (en) | 2013-03-14 | 2017-01-31 | Hubbell Incorporated | Apparatuses, systems and methods for detecting corona |
JP6463920B2 (en) * | 2013-08-05 | 2019-02-06 | キヤノン株式会社 | Ultrasonic transmission device, ultrasonic reception device, sheet discrimination device and image forming device |
US9594109B2 (en) * | 2014-02-17 | 2017-03-14 | Scadata, Inc. | Monitoring system for electrical equipment failure and method |
WO2016208274A1 (en) * | 2015-06-23 | 2016-12-29 | 日本電気株式会社 | Detection system, detection method, and program |
JP2017032395A (en) * | 2015-07-31 | 2017-02-09 | Ntn株式会社 | Vibration analyzer and abnormality diagnosis system |
WO2017120425A1 (en) | 2016-01-08 | 2017-07-13 | Iriss, Inc. | Replacement panels for electrical distribution cabinets for the monitoring of targeted components and connections |
US10439860B2 (en) * | 2016-10-06 | 2019-10-08 | At&T Digital Life, Inc. | Installation location noise floor evaluation device |
CN106248787A (en) * | 2016-10-18 | 2016-12-21 | 国网山东省电力公司烟台供电公司 | A kind of transformer station SF6 gas ultrasound monitoring device |
CN106370728A (en) * | 2016-12-02 | 2017-02-01 | 河南宏博测控技术有限公司 | Power grid fault ultrasonic testing device and method |
EP3574252A4 (en) | 2017-01-30 | 2020-08-26 | Latency, LLC | Systems, methods, and media for detecting abnormalities in equipment that emit ultrasonic energy into a solid medium during failure |
US10983156B2 (en) | 2017-04-25 | 2021-04-20 | IRISS Holdings, Inc. | Panel for audible monitoring of electrical components and the detection of electrical faults |
US10440472B2 (en) | 2017-08-11 | 2019-10-08 | Hubbell Incorporated | Corona detection using audio data |
US11156525B2 (en) * | 2017-12-28 | 2021-10-26 | Phyn Llc | Egress point localization |
US11035749B2 (en) * | 2019-02-07 | 2021-06-15 | Georg Fischer, LLC | Leak test system and method for thermoplastic piping |
NO346082B1 (en) * | 2019-03-15 | 2022-02-07 | Elliptic Laboratories As | Touchless interaction using audio components |
US11188292B1 (en) | 2019-04-03 | 2021-11-30 | Discovery Sound Technology, Llc | System and method for customized heterodyning of collected sounds from electromechanical equipment |
CN110617405A (en) * | 2019-06-20 | 2019-12-27 | 安徽理工大学 | Gas pipeline leakage monitoring and positioning system |
CN112834871B (en) * | 2019-11-25 | 2023-04-07 | 国网江苏省电力有限公司南京供电分公司 | A system and method for on-line monitoring of insulation faults of high-voltage large-length cables |
JP2022032077A (en) * | 2020-08-11 | 2022-02-25 | 株式会社ジェイテクト | Monitoring device, sound collecting device and monitoring method |
JP2022079836A (en) * | 2020-11-17 | 2022-05-27 | 株式会社ミヤワキ | Diagnostic device |
US11965859B1 (en) | 2020-11-18 | 2024-04-23 | Discovery Sound Technology, Llc | System and method for empirical estimation of life remaining in industrial equipment |
WO2022180748A1 (en) * | 2021-02-25 | 2022-09-01 | Jfeアドバンテック株式会社 | Leakage amount estimation method, leakage amount estimation device, and leakage amount estimation system |
CN114088816B (en) * | 2021-11-25 | 2022-09-30 | 南京谷贝电气科技有限公司 | Calibration system for air type ultrasonic partial discharge detection device |
CN115337077B (en) * | 2022-07-22 | 2024-07-23 | 广东博迈医疗科技股份有限公司 | Ultrasonic control circuit, electronic equipment and ultrasonic balloon catheter |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4294122A (en) * | 1979-07-12 | 1981-10-13 | General Dynamics Corporation | Fastener incorporating ultrasonic transducer |
JPS6215563A (en) * | 1985-07-15 | 1987-01-23 | Toshiba Corp | Developing device |
WO1990000366A1 (en) * | 1988-07-12 | 1990-01-25 | John Patrick Mccarthy | Monitoring apparatus |
US5089997A (en) * | 1990-11-02 | 1992-02-18 | Pasar, Inc. | Ultrasonic energy detector with frequency and amplitude indications and background noise reduction |
SU1744636A1 (en) * | 1990-10-04 | 1992-06-30 | Научно-Производственное Объединение По Технологии Машиностроения "Цниитмаш" | Ultrasonic flaw-detector |
GB2275110A (en) * | 1993-02-10 | 1994-08-17 | Gestra Ag | Process for checking condensate drain valves |
JPH07265313A (en) * | 1994-03-31 | 1995-10-17 | Hitachi Medical Corp | Ultrasonic tomographic apparatus |
WO1996014014A2 (en) * | 1994-11-04 | 1996-05-17 | Telbus Gesellschaft Für Elektronische Kommunikations-Systeme Mbh | Portable medical measurement and diagnosing apparatus |
EP0763344A2 (en) * | 1995-09-13 | 1997-03-19 | Medison Co., Ltd. | Portable ultrasonic diagnostic apparatus |
WO1998021573A1 (en) * | 1996-11-15 | 1998-05-22 | Ue Systems, Inc. | Ultrasonic leak detecting apparatus |
Family Cites Families (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3253457A (en) | 1961-12-15 | 1966-05-31 | Westinghouse Electric Corp | Apparatus for locating trouble sources which generate ultrasonic vibrations |
US3222635A (en) | 1962-11-13 | 1965-12-07 | Hewlett Packard Co | Ultrasonic vibration detector |
US3592967A (en) | 1968-05-20 | 1971-07-13 | George A Harris | Ultrasonic detector |
US3782180A (en) | 1968-05-20 | 1974-01-01 | G Harris | Method for detecting leaks in condenser tubes |
US3978915A (en) | 1971-08-31 | 1976-09-07 | E. F. I. Inc. | Condenser with leak detecting apparatus |
JPS5421894A (en) | 1977-07-20 | 1979-02-19 | Nippon Soken | Temperature measuring device |
US4287581A (en) * | 1980-02-19 | 1981-09-01 | Neale Sr Dory J | Ultrasonic fluid leak detector |
US4476706A (en) | 1982-01-18 | 1984-10-16 | Delphian Partners | Remote calibration system |
US4416145A (en) | 1982-02-10 | 1983-11-22 | Ue Systems, Inc. | Ultrasonic leak detecting method and apparatus |
US4635042A (en) | 1984-03-21 | 1987-01-06 | Michael Ede | Vacuum leak detector |
DE3530747A1 (en) | 1985-08-28 | 1987-03-05 | Stoeckert Instr Gmbh | ULTRASONIC SENSOR |
JPS62212542A (en) | 1986-03-14 | 1987-09-18 | Tlv Co Ltd | Apparatus for measuring leak quantity of steam |
JPS62298788A (en) | 1986-06-18 | 1987-12-25 | Omron Tateisi Electronics Co | Ultrasonic switch |
US4823600A (en) | 1987-11-05 | 1989-04-25 | Ue Systems, Inc. | Ultrasonic transducer and current loop transmitter |
US4879546A (en) | 1987-11-30 | 1989-11-07 | Kent-Moore Corporation | Ultrasonic hand-held refrigerant leak detector |
FI892088A (en) | 1988-06-15 | 1989-12-16 | Siemens Ag | ULTRALJUDSOND FOER PROEVNING AV U-ROER I EN VAERMEVAEXLARE. |
US4852390A (en) | 1988-07-21 | 1989-08-01 | Oakland Engineering, Inc. | Wheel rim leak detection |
US5053747A (en) | 1989-09-05 | 1991-10-01 | Pacesetter Infusion, Inc. | Ultrasonic air-in-line detector self-test technique |
US4945766A (en) | 1989-09-08 | 1990-08-07 | General Motors Corporation | Method and apparatus for ultrasonic inspection |
US5205175A (en) * | 1990-02-27 | 1993-04-27 | Acoustic Imaging Technologies Corporation | Multiple transducer selector |
JPH04188058A (en) | 1990-11-21 | 1992-07-06 | Olympus Optical Co Ltd | Ultrasonic-wave flaw detecting apparatus |
SE506195C2 (en) | 1993-03-29 | 1997-11-17 | Goesta Lange | Hydrophone system for monitoring wiring networks |
US5445026A (en) | 1993-06-14 | 1995-08-29 | Eagan; Chris S. | Electronic instrument for locating and diagnosing engine sounds |
US5453932A (en) | 1994-01-12 | 1995-09-26 | Advanced Grade Technology, Inc. | Device and method for detecting and elimination of spurious ultrasonic ranging echoes |
US5535136A (en) | 1994-05-17 | 1996-07-09 | Standifer; Larry R. | Detection and quantification of fluid leaks |
US5710377A (en) | 1995-10-17 | 1998-01-20 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Ultrasonic leak detection system |
-
1999
- 1999-04-30 GB GB9910083A patent/GB2337117B/en not_active Expired - Fee Related
- 1999-12-10 US US09/458,293 patent/US6247353B1/en not_active Expired - Lifetime
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4294122A (en) * | 1979-07-12 | 1981-10-13 | General Dynamics Corporation | Fastener incorporating ultrasonic transducer |
JPS6215563A (en) * | 1985-07-15 | 1987-01-23 | Toshiba Corp | Developing device |
WO1990000366A1 (en) * | 1988-07-12 | 1990-01-25 | John Patrick Mccarthy | Monitoring apparatus |
SU1744636A1 (en) * | 1990-10-04 | 1992-06-30 | Научно-Производственное Объединение По Технологии Машиностроения "Цниитмаш" | Ultrasonic flaw-detector |
US5089997A (en) * | 1990-11-02 | 1992-02-18 | Pasar, Inc. | Ultrasonic energy detector with frequency and amplitude indications and background noise reduction |
GB2275110A (en) * | 1993-02-10 | 1994-08-17 | Gestra Ag | Process for checking condensate drain valves |
JPH07265313A (en) * | 1994-03-31 | 1995-10-17 | Hitachi Medical Corp | Ultrasonic tomographic apparatus |
WO1996014014A2 (en) * | 1994-11-04 | 1996-05-17 | Telbus Gesellschaft Für Elektronische Kommunikations-Systeme Mbh | Portable medical measurement and diagnosing apparatus |
EP0763344A2 (en) * | 1995-09-13 | 1997-03-19 | Medison Co., Ltd. | Portable ultrasonic diagnostic apparatus |
WO1998021573A1 (en) * | 1996-11-15 | 1998-05-22 | Ue Systems, Inc. | Ultrasonic leak detecting apparatus |
Non-Patent Citations (1)
Title |
---|
http://www.rogers-machinery.com/SDT/sdtinf.htm * |
Also Published As
Publication number | Publication date |
---|---|
US6247353B1 (en) | 2001-06-19 |
GB2337117A (en) | 1999-11-10 |
GB9910083D0 (en) | 1999-06-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB2337117B (en) | Digital ultrasonic monitoring system and method | |
EG20899A (en) | Method and system for distributed well monitoring | |
IL118389A0 (en) | Fetal monitoring system and method | |
GB2341969B (en) | Editing system and editing method | |
AU3699700A (en) | Monitoring system and method | |
SG80612A1 (en) | Milti-carrier transmission system and method thereof | |
HK1023025A1 (en) | Interface system and method | |
HK1010258A1 (en) | Operation management system and operation management method | |
IL121348A0 (en) | System and method for device monitoring | |
GB9824338D0 (en) | Hybird-linear-bicubic interpolation method and apparatus | |
IL123626A0 (en) | Wire detection system and method | |
IL121932A0 (en) | Monitoring method and apparatus | |
IL119956A0 (en) | Brake monitoring system and method | |
GB0007103D0 (en) | Network monitoring method and system | |
GB9807051D0 (en) | Monitoring arrangement and method | |
GB9926491D0 (en) | Monitoring apparatus and system | |
GB9817672D0 (en) | Position monitoring method and apparatus | |
GB2375607B (en) | Digital ultrasonic monitoring system and method | |
IL125222A0 (en) | A key-agreement system and method | |
GB0102352D0 (en) | Digital ultrasonic monitoring system and method | |
GB2375823B (en) | Digital ultrasonic monitoring system and method | |
AU5764899A (en) | Method and system for monitoring an area | |
GB9800781D0 (en) | Co-extrusion method and apparatus | |
AU7044898A (en) | Monitoring system and method | |
GB2321523B (en) | Method and system for monitoring heart function |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20070430 |